Jainagar is a Sub-District (Tehsil/Block/Mandal) in the Madhubani District of Bihar. As par Census 2011 information the sub-district code of Jainagar is 01083. There are about 21 sub-districts in Madhubani and Jainagar is one of them. Andhratharhi, Babubarhi, Basopatti, Benipatti, Bisfi, Ghoghardiha, Harlakhi, Jhanjharpur, Kaluahi, Khajauli, Ladania, Lakhnaur, Laukaha, Laukahi, Madhepur, Madhubani, Madhwapur, Pandaul, Phulparas, Rajnagar etc. are other sub-districts in Madhubani.There are about 21 villages in Jainagar sub-district, which you can browse from villages list.